Cosplaymagic has wonderful wigs, and that one is good too. I think you could also take a look at ebay's suggestions above the wig that it's not sold anymore.
I've bought this for my little brother, who cosplayed Hope as well, and it looks very good, you just have to make it a bit spiky and cut the front bangs http://www.wig-supplier.com/Evangeli...CW173-139.html